/*
 * Copyright 2021 The Backstage Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

export type UnboxPromise<T extends Promise<any>> = T extends Promise<infer U>
  ? U
  : never;

export type UnboxReturnedPromise<T extends (...args: any) => Promise<any>> =
  UnboxPromise<ReturnType<T>>;

export type UnboxArray<T> = T extends (infer U)[] ? U : T;
